Although the suggestion was risky (World War II had shown that the Soviet troops weren't exactly pushovers), the Joint Chiefs of Staff took it very seriously. To counter any resistance, Clay asked Air Force general Curtis LeMay for some air cover. LeMay's war boner was as instant and impressive as Clay's: He recommended that they just up and launch a pre-emptive strike against all Soviet airfields in Germany.
What Stopped It:
Fortunately, rather than start World War III, the Allied forces decided to give peace a chance. They started a 15-month airlift operation, carrying supplies for West Berliners until Stalin got bored and backed off. This, of course, would be the event the world would remember as the Berlin Airlift.
Because "The Berlin Plane Orgy" just sounded gross.
If the War Had Happened:
World War III: Nuclear Boogaloo.
Imagine the collective brick the Allied leaders shat when Stalin pulled his stunt. They were fresh off a fight with a mass-murdering dictator, and were now suddenly facing another who had just kicked the first one's ass. They were not in a chance-taking mood.
We'd kinda had our fill of goose-stepping murderbots by that point.